Speaker
Description
The nuclides for which extended sets of E2 matrix elements have been measured by means of COULEX experiments have been studied in the framework of the triaxial projected shell model (TPSM).
The study encompasses: $_{~~~~~~~~~32}^{70,72,74}$Ge$_{38,40,42}$, $_{~~~~~~~~~~~~~~~34}^{76,78,80,82}$Se$_{42,44,46,48}$, $_{42}^{100}$Mo$_{58}$, $_{44}^{104}$Ru$_{60}$,
$_{~~~~~~~~~~~~~~~46}^{106,108,110}$Pd$_{60,62,64}$, $_{68}^{168}$Er$_{100}$,$_{~~~~~~~~~~~~~~~76}^{186,188,190}$Os$_{110,112,114}$ and $_{78}^{184}$Pt$_{106}$.
The experimental energies of the ground band, of the quasi $\gamma$ band and of some excited $0^+$ bands, as well as, their individual intra and inter band matrix E2 matrix elements are systematically accounted for by the microscopic TPSM calculations. The studied nuclei represent axial, rigid triaxial and soft triaxial shapes from the perspective of the collective model. The discriminating features are demonstrated by comparing the Kumar-Cline shape invariants derived from the TPSM results with the experimental ones. The TPSM uses the static triaxial deformation of the mean field as the only input adjusted to the experiment. The relation between the model’s capability to account for the different shape characteristics and the superosition of multi quasiparticle excitations will be discussed.
| Contribution category | Theory |
|---|---|
| Presenter status | Faculty/Staff |